Ooh room service. That super-indulgent thing you always want to get but rarely splurge on for yourself… or your dog. But Serena Williams did and then she ate it and then warned the world about it via SnapChat.

The warning message, posted to YouTube by Alysha Tsuji, details Williams’ beef with the dog food. She stews for almost four minutes, but her message boils down to one basic take-away.